Change of Temperature and Pressure in Dry and Green Douglas-Fir and Sugi Wood During Passive Impregnation Method

Authors

  • Md Nazrul Islam
  • Keisuke Ando
  • Hidefumi Yamauchi
  • Nobuaki Hattori

Keywords:

Douglas-fir, passive impregnation, penetration, preservation, retention, sugi

Abstract

This work investigated pressure and temperature change in green and dry Douglas-fir and sugi wood during passive impregnation treatment with copper azole type B preservative at higher concentration. Temperature and pressure sensors were used in wood for obtaining temperature and pressure change data every 10 s during the preservative treatment. Gross preservative and X-ray fluorescence spectroscopy was used to obtain retention. Penetration was measured following the standard. Although temperature rise was steeper in green Douglas-fir, pressure was higher in green sugi. However, phenomena were similar for dry lumber of both species. Preservative retention was very high (6.63 kg/m3), and in most cases, it exceeded the requirements of permanent structural components in ground contact applications. Preservative penetration was almost 100% for all samples.

References

Bamber RK, Burley J (1983) The wood properties of Radiata pine. Commonwealth Agricultural Bureaux, Slough, Australia.nBarnes HM, Murphy RJ (1995) Wood preservation—The classics and the new age. Forest Prod J 45(9):16-23.nEaton RA, Hale MDC (1993) Wood: Decay, pests and protection. Chapman and Hall Ltd., London, UK.nFujii T, Suzuki Y, Kuroda N (1997) Bordered pit aspiration in the wood of Cryptomeria japonica in relation to air permeability. IAWA J 18:69-76.nHattori N, Islam MN, Ando K, Yamauchi H, Kobayashi Y (2007) Penetration of liquid into laser incised lumber by the passive impregnation. Pages 23-31 in Proc of the 18th International Wood Machining Seminar, vol. 1, 7-9 May 2007, Vancouver, Canada.nIslam MN, Ando K, Yamauchi H, Hattori N (2009) Effects of species and moisture content on penetration of liquid in laser incised lumber by the passive impregnation method. Holz Roh Werkst 67(2):129-133.nIslam MN, Ando K, Yamauchi H, Kobayashi Y, Hattori N (2007) Passive impregnation of liquid in impermeable lumber incised by laser. J Wood Sci 53(5):436-441.nIslam MN, Ando K, Yamauchi H, Kobayashi Y, Hattori N (2008) Comparative study between full cell and passive impregnation method of wood preservation for laser incised Douglas-fir lumber. Wood Sci Technol 42(4):343-350.nKumar S, Morrell JJ (1989) Moisture content of western hemlock: Influence on treatability with chromated copper arsenate Type C. Holzforschung 43:279-280.nLebow ST (2004) Alternatives to chromated copper arsenate for residential construction. Res Pap FPL-RP-618. USDA For Serv Forest Prod Lab, Madison, WI. 9 pp.nMacLean JD (1941) Thermal conductivity of wood. Transactions American Society of Heating and Ventilating Engineers 47:323-354.nMatsumura J, Tsutsumi J, Oda K (1994) Relationships of bordered pit aspiration to longitudinal gas permeability in a given stem level: Preliminary discussion on airdried wood of Cryptomeria japonica and Larix leptolepis. Bulletin Kyushu University of Forestry 71:35-46.nPhillips EWJ (1993) Movement of the pit membrane in coniferous woods, with special reference to preservative treatment. Forestry 7:109-120.nPott GT, Hueting D, van Deursen J (2000) A commercially attractive method to reduce moisture sensitivity of lignocellulose fibres, without the use of chemicals. Pages 1-7 in Proc 3rd International Symposium—Bioresource Hemp and Other Fiber Crops, 13-16 September 2000, Wolfsburg, Germany.nRhatigan RG, Morrell JJ (2003) Use of through-boring to improve CCA or ACZA treatment of refractory Douglas-fir and grand fir. Forest Prod J 53(6):33-35.nRowell RM, Lichtenberg RS, Larsson P (1993) Stability of acetylated wood to environmental changes. Wood Fiber Sci 25(4):359-364.nRowell RM, Tillman AM, Simonson R (1986) A simplified procedure for the acetylation of hardwood and softwood flakes for flakeboard production. J Wood Chem Technol 6(3):427-448.nRuyter HP, Hortulanus A (1995) Process for upgrading low quality wood. Patent 5451361.nSimpson WT (1993) Specific gravity, moisture content, and density relationship for wood. Gen Tech Rep FPL-GTR-76. USDA For Serv Forest Prod Lab, Madison, WI. 2 pp.nSkaar C (1984) Wood-water relationships. Pages 143-144 in RM Rowel, ed. The chemistry of solid wood, (l), Advances in Chemistry Series 207. American Chemical Society, Washington, DC.nSuttie ED (1997) Novel wood preservatives. Chem Ind 18:720-724.n

Downloads

Published

2011-09-21

Issue

Number 3 / July 2011

Section

Research Contributions

License

The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:

1. All proprietary rights other than copyright, such as patent rights.

2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.

3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.